pscan: new applet (portscanner). ~1350 bytes. By Tito <farmatito@tiscali.it>

wget: lift 256 chars limitation on terminal width

include/applets.h

@@ -257,6 +257,7 @@ USE_HALT(APPLET_ODDNAME(poweroff, halt, _BB_DIR_SBIN, _BB_SUID_NEVER, poweroff))
 USE_PRINTENV(APPLET(printenv, _BB_DIR_BIN, _BB_SUID_NEVER))
 USE_PRINTF(APPLET(printf, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_PS(APPLET(ps, _BB_DIR_BIN, _BB_SUID_NEVER))
+USE_PSCAN(APPLET(pscan, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
 USE_PWD(APPLET_NOFORK(pwd, pwd, _BB_DIR_BIN, _BB_SUID_NEVER, pwd))
 USE_RAIDAUTORUN(APPLET(raidautorun, _BB_DIR_SBIN, _BB_SUID_NEVER))
 USE_RDATE(APPLET(rdate, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))

include/usage.h

@@ -2676,6 +2676,16 @@
        " 2990 andersen andersen R ps\n"
 
 
+#define pscan_trivial_usage \
+       "[-p MIN_PORT] [-P MAX_PORT] [-t TIMEOUT] [-T MIN_RTT] HOST"
+#define pscan_full_usage \
+       "Scan a host, print all open ports" \
+       "\n\nOptions:" \
+     "\n	-p	Scan from this port (default 1)" \
+     "\n	-P	Scan up to this port (default 1024)" \
+     "\n	-t	Timeout (default 5000 ms)" \
+     "\n	-T	Minimum rtt (default 5 ms, increase for congested hosts)" \
+
 #define pwd_trivial_usage \
        ""
 #define pwd_full_usage \

networking/Config.in

@@ -527,6 +527,12 @@ config PING6
 	help
 	  This will give you a ping that can talk IPv6.
 
+config PSCAN
+	bool "pscan"
+	default n
+	help
+	  Simple network port scanner.
+
 config FEATURE_FANCY_PING
 	bool "Enable fancy ping output"
 	default y

networking/Kbuild

@@ -25,6 +25,7 @@ lib-$(CONFIG_NETSTAT)      += netstat.o
 lib-$(CONFIG_NSLOOKUP)     += nslookup.o
 lib-$(CONFIG_PING)         += ping.o
 lib-$(CONFIG_PING6)        += ping.o
+lib-$(CONFIG_PSCAN)        += pscan.o
 lib-$(CONFIG_ROUTE)        += route.o
 lib-$(CONFIG_TELNET)       += telnet.o
 lib-$(CONFIG_TELNETD)      += telnetd.o

networking/ping.c

@@ -341,7 +341,12 @@ static void sendping4(int junk ATTRIBUTE_UNUSED)
 	pkt->icmp_cksum = 0;
 	pkt->icmp_seq = htons(ntransmitted); /* don't ++ here, it can be a macro */
 	pkt->icmp_id = myid;
+
+// I can't fucking believe someone thought it's okay to do it like this...
+// where's hton? Where is a provision for different word size, structure padding, etc??
+// FIXME!
 	gettimeofday((struct timeval *) &pkt->icmp_dun, NULL);
+
 	pkt->icmp_cksum = in_cksum((unsigned short *) pkt, datalen + ICMP_MINLEN);
 
 	sendping_tail(sendping4, pkt, datalen + ICMP_MINLEN);
@@ -356,6 +361,8 @@ static void sendping6(int junk ATTRIBUTE_UNUSED)
 	pkt->icmp6_cksum = 0;
 	pkt->icmp6_seq = htons(ntransmitted); /* don't ++ here, it can be a macro */
 	pkt->icmp6_id = myid;
+
+// FIXME!
 	gettimeofday((struct timeval *) &pkt->icmp6_data8[4], NULL);
 
 	sendping_tail(sendping6, pkt, datalen + sizeof(struct icmp6_hdr));

networking/wget.c

@@ -693,16 +693,15 @@ progressmeter(int flag)
 	struct timeval now, td, tvwait;
 	off_t abbrevsize;
 	int elapsed, ratio, barlength, i;
-	char buf[256];
 
 	if (flag == -1) { /* first call to progressmeter */
-		gettimeofday(&start, (struct timezone *) 0);
+		gettimeofday(&start, NULL);
 		lastupdate = start;
 		lastsize = 0;
 		totalsize = content_len + beg_range; /* as content_len changes.. */
 	}
 
-	gettimeofday(&now, (struct timezone *) 0);
+	gettimeofday(&now, NULL);
 	ratio = 100;
 	if (totalsize != 0 && !chunked) {
 		/* long long helps to have working ETA even if !LFS */
@@ -713,7 +712,9 @@ progressmeter(int flag)
 	fprintf(stderr, "\r%-20.20s%4d%% ", curfile, ratio);
 
 	barlength = getttywidth() - 51;
-	if (barlength > 0 && barlength < sizeof(buf)) {
+	if (barlength > 0) {
+		/* god bless gcc for variable arrays :) */
+		char buf[barlength+1];
 		i = barlength * ratio / 100;
 		memset(buf, '*', i);
 		memset(buf + i, ' ', barlength - i);